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Optical imaging lens

An optical imaging lens and imaging technology, applied in the field of optical imaging, can solve the problems of increasing distance, unfavorable thinning of mobile phones and digital cameras, etc., and achieve the effects of increasing image height, reducing aperture value, and shortening system length

Pending Publication Date: 2021-03-12
GENIUS ELECTRONICS OPTICAL XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in response to demand, increasing the number of optical lenses will increase the distance on the optical axis from the object side of the first lens to the imaging surface, which is not conducive to the thinning of mobile phones and digital cameras

Method used

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  • Optical imaging lens
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Examples

Experimental program
Comparison scheme
Effect test

no. 3 example

[0130] The arrangement and removal of surface bumps on the object sides L1A1, L2A1, L4A1, L5A1, L6A1, L7A1 facing the object side A1 and the image sides L1A2, L2A2, L3A2, L4A2, L5A2, L6A2, L7A2 facing the image side A2 of the third embodiment The positive and negative diopter configurations of the lenses other than the third lens L3 and the fourth lens L4 are generally similar to those of the first embodiment, except for the curvature radius, lens thickness, aspheric coefficient, back focus, etc. of the third embodiment Relevant optical parameters, surface concavo-convex configuration of object side L3A1, third lens L3 having negative refractive power and fourth lens L4 having positive refractive power are different from those of the first embodiment. In detail, the difference in surface unevenness arrangement is that the optical axis area L3A1C of the object side surface L3A1 of the third lens L3 is a concave surface. About each optical property of each lens of the optical im...

no. 4 example

[0134] The arrangement of surface concavities and convexities of the object side faces L1A1, L2A1, L3A1, L4A1, L6A1 facing the object side A1 and the image side faces L1A2, L2A2, L3A2, L4A2, L5A2, L7A2 facing the image side A2 of the fourth embodiment and the positive and negative positions of each lens The diopter configuration is roughly similar to that of the first embodiment, except for the fourth embodiment’s relative optical parameters such as the radius of curvature, lens thickness, aspherical coefficient, and back focal length, as well as the configuration of surface bumps on the object side L5A1, L7A1 and image side L6A2 Different from the first embodiment. In detail, the differences in surface unevenness are that the peripheral region L5A1P of the object-side surface L5A1 of the fifth lens L5 is convex, the peripheral region L6A2P of the image-side surface L6A2 of the sixth lens L6 is convex, and the object-side surface L7A1 of the seventh lens L7 is convex. The circ...

no. 5 example

[0138]The surface concave-convex arrangement of the object side L1A1, L2A1, L3A1, L6A1, L7A1 facing the object side A1 and the image side L1A2, L2A2, L3A2, L4A2, L6A2, L7A2 facing the image side A2 of the fifth embodiment and the positive and negative of each lens The diopter configuration is generally similar to that of the first embodiment, except for the fifth embodiment’s relative optical parameters such as the radius of curvature, lens thickness, aspheric coefficient, back focal length, and the configuration of surface bumps on the object side L4A1, L5A1 and image side L5A2 Different from the first embodiment. Specifically, the difference in surface unevenness is that the optical axis area L4A1C of the object side surface L4A1 of the fourth lens L4 is concave, the optical axis area L5A1C of the object side surface L5A1 of the fifth lens L5 is concave, and the image of the fifth lens L5 is concave. Optical axis region L5A2C of side surface L5A2 is convex. About each optic...

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Abstract

The invention discloses an optical imaging lens which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object sideto an image side. By controlling the concave-convex curved surface arrangement of the lens, under the condition of maintaining good optical performance, the system length is shortened, the aperture value is reduced, and the image height is increased.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to an optical imaging lens. Background technique [0002] In recent years, the optical imaging lens has been continuously evolving. In addition to requiring the lens to be thin and small, it is also more and more important to improve the imaging quality of the lens such as aberration and chromatic aberration. However, increasing the number of optical lenses according to the demand will increase the distance on the optical axis from the object side of the first lens to the imaging surface, which is not conducive to the thinning of mobile phones and digital cameras. Therefore, it has always been a design development goal to provide an optical imaging lens that is thin, light, small and has good imaging quality. In addition, a small aperture value (Fno) is conducive to increasing the amount of light passing through, and a large image height can appropriately increase the pixel size of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045G02B9/64G02B3/04
Inventor 胡润王召
Owner GENIUS ELECTRONICS OPTICAL XIAMEN
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